An endostyle is a longitudinal ciliated groove on the ventral wall of the pharynx which produces mucus to gather food particles. It is found in urochordates and cephalochordates, and in the larvae of lampreys. It aids in transporting food to the esophagus. It is also called the hypopharyngeal groove. The endostyle in larval lampreys (ammocetes) metamorphoses into the thyroid gland in adults, and is regarded as being homologous to the thyroid gland in vertebrates. However, Dumont, et al. question whether the endostyle in ammocetes is homologous with that of the urochordates and cephalochordates. Since the endostyle is found in the three branches of chordates, it is presumed to have arisen in the common ancestor of these taxa, along with a shift to internal feeding for extracting suspended food from the water. [ http://en.wikipedia.org/wiki/Endostyle ]

This is just here as a test because I lose it

Term information

comment

Dumont, et al. question whether the endostyle in ammocetes is homologous with that of the urochordates and cephalochordates[WP].

has related synonym

hypopharyngeal groove

id

UBERON:0006870

present in taxon

http://purl.obolibrary.org/obo/NCBITaxon_7735

http://purl.obolibrary.org/obo/NCBITaxon_7712

http://purl.obolibrary.org/obo/NCBITaxon_7745

Term relations